Users or consumers have become increasingly prominent in sociological work
on technology - as in the social sciences generally. This paper takes up an
d extends arguments developed by Steve Woolgar about how producers of techn
ology 'configure the user'. Rapid Application Development (RAD) is a recent
technology (or methodology) for computer system development which emphasiz
es extensive user involvement throughout the development process. Drawing o
n ethnographic research of RAD, the paper develops four arguments. First, t
hat decoding (by users) as well as encoding (by producers) is important for
understanding technology production. Second, that designers configure user
s but they, in turn, are configured both from within their own organization
s, and by users. Third, that the boundary between user and designer is flui
d and, indeed, configured. Finally, it develops the case for an extended ac
tor-network approach which encompasses users or consumption.